<template>
  <div>
      <!-- 面包屑导航区 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
      </el-breadcrumb>

      <!-- 卡片视图区域 -->
      <el-card>
        <el-row :gutter="15">
          <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" 
              clearable @clear="getGoodsList()">
              <el-button slot="append" icon="el-icon-search" @click="getGoodsList()"></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
            <el-button type="primary" @click="goAddPage()">添加商品</el-button>
          </el-col>
        </el-row>

        <!-- table 表格区域 -->
        <el-table :data="goodsList" border stripe>
          <el-table-column type="index"></el-table-column>
          <el-table-column label="商品名称" prop="goods_name"></el-table-column>
          <el-table-column label="商品价格(元)" prop="goods_price" width="100px"></el-table-column>
          <el-table-column label="商品重量" prop="goods_weight" width="100px"></el-table-column>
          <el-table-column label="创建时间" prop="add_time" width="200px">
            <template slot-scope="scope">
              {{scope.row.add_time | dateFormat}}
            </template>
          </el-table-column>
          <el-table-column label="操作" style="width:200px">
            <template slot-scope="scope" style="width:200px">
              <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
              <el-button type="danger" icon="el-icon-delete" size="mini" 
                @click="deleteGoods(scope.row.goods_id)"></el-button>
            </template>
          </el-table-column>
        </el-table>

        <!-- 分页模块 -->
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[5, 10, 15, 20]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
          background>
        </el-pagination>
      </el-card>
  </div>
</template>

<script>
export default {
  data(){
    return{
      // 查询的参数
      queryInfo:{
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表 
      goodsList: [],
      // 总数据条数
      total: 0
    }
  },

  created(){
    this.getGoodsList()
  },
  methods:{
    // 列表的接口
    async getGoodsList(){
      const{data: res} = await this.$http.get('goods',{params: this.queryInfo})
      // console.log(JSON.stringify(res))
      if(res.meta.status !== 200){
        return this.$message.error('列表请求失败！')
      }
      this.total = res.data.total
      this.goodsList = res.data.goods
    },
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    // 删除商品方法
    async deleteGoods(id){
      const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // 用户取消了删除操作
      if(confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }

      const{data: res} = await this.$http.delete('goods/' + id)
      if(res.meta.status !== 200){
        return this.$message.error('删除商品失败!')
      }
      this.$message.success('删除商品成功')
      this.getGoodsList()
    },
    goAddPage(){
      this.$router.push('/goods/add')
    }
  }
}

</script>

<style scoped>

</style>